The U.S. government needs to use more forceful tactics and stronger sanctions to get UN inspectors into Iran's nuclear facilities to ensure that Iran is not using their nuclear capabilities to develop weapons. Iran claims they are using their nuclear power for peaceful purposes, yet why do they prohibit inspectors from their facilities?
In this year's United Nations General Assembly, Iran's President, Ahmadinejad, called for a new world order not dominated by Western powers. If Iran was to develop the capabilities of building nuclear weapons, they would use those weapons to start a war by destroying their perceived enemies of Islam.
Nuclear weapons are the greatest threat to mankind in the hands of an untrustworthy government.